[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Dom0 Kernel - Fixes for saving/restoringMSI/MSI-X across Dom0 S3
On 24/11/08 11:41, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: >>>> "Shan, Haitao" <haitao.shan@xxxxxxxxx> 24.11.08 12:03 >>> >> With this patch, MSI/MSI-X capabilities and tables are saved in Dom0 when >> S3 and restored when resume. Actually, this is also the approach that >> kernel takes. The only concern is that Dom0 should not touch MSI/MSI-X, >> they are owned by VMM itself. Maybe adding a hypercall to instruct Xen to >> do the saving/restoring is good. I wonder whether the reason is strong >> enough for adding a hypercall for such purpose. > > Is it at all necessary to use a hypercall here? Shouldn't Xen itself be able > to > do the necessary saving/restoring (just like it does for IO-APIC)? I was thinking the same thing. Haitao: shall I hold off on your original patch while we think about this? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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